The International Workshop on Future Linear Colliders 2026 (LCWS2026) will be held at KEK in Tsukuba, Japan, from 9 to 13 November 2026.
LCWS2026 continues the international workshop series dedicated to the physics, detectors and accelerator technologies of future high-energy electron–positron colliders. It will bring together researchers from around the world to share recent progress, discuss future directions and strengthen collaboration across the global future-collider community.
Linear colliders offer a compelling option for a next-generation Higgs factory, with a flexible path towards higher centre-of-mass energies and luminosities. LCWS2026 will therefore place particular emphasis on the long-term potential of linear colliders, including energy and luminosity upgrades, as well as their complementarity and synergy with circular collider initiatives.
The programme will include plenary and parallel sessions covering accelerator technologies, detector concepts and physics studies. Both in-person and remote participation are available.
Registration is now open. The early-registration fee is available until 4 October, and in-person registration closes on 25 October. Remote registration is available until 1 November.
We warmly invite researchers, engineers, students and all those interested in the future of high-energy colliders to join us at KEK—or online—and contribute to the discussions shaping the next generation of particle physics.
For further details, including the programme, registration, accommodation and visa information, please visit the LCWS2026 website.
They initially hoped the LHC would find not just the Higgs, but other new particles as well, which meant the LHC’s successor could be a smaller, straight-shot linear collider that would study those particles in detail.
Three of these ideas reflect the European Strategy for Particle Physics, which states that “an electron–positron Higgs factory is the highest-priority next CERN collider”. Two linear electron–positron colliders would require just 11–34 km of tunnelling and could begin construction in the mid-2030s, but would involve a fair amount of technical risk and cost roughly €10bn.
LCF
The Linear Collider Facility (LCF) is a linear electron-positron collider, based on the design of the International Linear Collider (ILC), in a 33.5 km tunnel with two IPs sharing the pulses delivered by the collider and with double the repetition rate of ILC.
